Chapter 34 - CHAPTER 3 4 VERTEBRATE EVOLUTION AND DIVERSITY...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 34 VERTEBRATE EVOLUTION AND DIVERSITY OUTLINE I. Invertebrate Chordates and the Origin of Vertebrates A. Four anatomical features characterize phylum Chordata B. Invertebrate chordates provide clues to the origin of vertebrates II. Introduction to the Vertebrates A. Neural crest, cephalization, a vertebral column, and a closed circulatory system characterize subphylum Vertebrata B. Overview of vertebrate diversity III. Superclass Agnatha: Jawless Vertebrates A. Lampreys and hagfishes are the only extant agnathans IV. Superclass Gnathostomata I: The Fishes A. Vertebrate jaws evolved from skeletal supports of the pharyngeal slits B. A cartilaginous endoskeleton reinforced by calcified granules is diagnostic of class Chondrichthyes C. A bony endoskeleton, operculum, and swim bladder are hallmarks of class Osteichthyes V. Superclass Gnathastomata II: The Tetrapods A. Amphibians are the oldest class of tetrapods B. Evolution of the amniotic egg expanded the success of vertebrates on land C. A reptilian heritage is evident in all amniotes D. Birds began as flying reptiles E. Mammals diversified extensively in the wake of the Cretaceous extinctions VI. Primates and the Phylogeny of Homo sapiens A. Primate evolution provides a context for understanding human origins B. Humanity is one very young twig on the vertebrate tree OBJECTIVES After reading this chapter and attending lecture, the student should be able to: 1. Describe the four unique characteristics of chordates. 2. Distinguish between the three subphyla of the phylum Chordata and give examples of each. 3. Describe the specialized characteristics found in the subphylum Vertebrata and explain how each is beneficial to survival. 4. Compare and contrast members of Agnatha, Placadermi, and Chondrichthyes.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
496 Unit V The Evolutionary History of Biological Diversity 5. Explain how members of the class Osteichthyes have becomes so diversified. 6. Summarize the evidence supporting the fact that amphibians evolved from crossopterygians. 7. Distinguish between the three orders of living amphibians. 8. List the distinguishing characteristics of members of the class Reptilia and explain any special adaptations to the terrestrial environment. 9. Explain how environmental changes during the Cretaceous Period may have affected the dinosaurs. 10. List the distinguishing characteristics of members of the class Aves and explain any special adaptations for flight. 11. Summarize the evidence supporting the fact that birds evolved from reptilian ancestors. 12. Explain why mammals underwent an adaptive radiation during the Cenozoic. 13. Distinguish between monotreme, marsupial, and placental mammals. 14. Explain how convergent evolution produced marsupial and placental ecological counterparts on different continents. 15. Compare and contrast the four main evolutionary lines of placental mammals. 16.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/08/2012 for the course BIOL 119 taught by Professor Hannam during the Spring '11 term at SUNY Geneseo.

Page1 / 26

Chapter 34 - CHAPTER 3 4 VERTEBRATE EVOLUTION AND DIVERSITY...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online